Clutch mechanism for looms and the like



- May 19, g31- I l. E. Roel-:Rs ET AL 1,805,498

CLUTCH MEHANISM FOR LOMS AND THE LIKE Filed July 8, 1927 Invent-OPS, ra EROQSPS, WU lLam C .5CO17U- 'Thetr Attorney.

25 In connection withthe operation of a'loom, ing suchy that the hub turns on the collar. 7.5 i'

Patented May 19,1931 a 1,805,498y

UNITED STATE/sf OFFICE o IRA E. ROGERS, on MARBLEHEAD, nAnn WILLIAM c, scorn vor YQUINCY, MAss\. :Htrs1'f1'1".1;s,` AssIGNons To GENERAL nnncrnfcjooivreenx, ncon'ioianrron'or NEW YORK CLUTCH Mnciienrsi/r ron. Looiasfiinn 4man yLIKE Application ined muys,11927..k "serial Najaoeasi. Y

The present invention o, relates to. clutch a clutch disk 10. Clutch facing 9 maybe in mechanisms wherein one of the clutchy elethe form of a'number of round inserts such ments or members is inthe form'of ajgear as corks, forexample. Clutch disk 10 is wheel which is moved relatively to the other fixed on sliaftG by meansof akey 11. Fixed clutch element-or member inengaging and'yonshaft 6 is agear wheel 12,.which meshes 55 disengaging the clutch.' Such a combination with ya vgear wheel 13 kmounted on a driven is found, for example, in` connection ywith shaft-,14. is ahand ywheelfixed toV shaft 6 velectricmotor drivesfor looms.v In such and gear wheel 12'by means of which shaft drives, the motor has a pinion on its `shaft V6 maybe turned by hand. f which meshes with a driving gear wheel. With the K abovefdescribed Varrangement 60 The driving gear wheel isloose on ythe kshaft whengearwheel 4 has its yclutch surface 8 in and is provided with aclutch surface adapted engagement withclutch facingy 9, Vshaft 6 is -to engage the clutch surfaceof aclutch. disk driven by motor .Howeven vwhen clutch which is fixed on theshaft. VConnectedwith lfavcing' is separated from clutch disk 10, n

15 the gear wheel is a mechanism inc ludingan` as is shown in li`ig. 1 ofthe drawing, motor 55 arm: for moving theY gearwheel axially alongV 1k drives .gear wheel 4 idly on's'haft 6.Y Gear;

n the shaft to bring its clutch Vsurface intoenywheel4 is adaptedto bemoved to bring its gagenient with the clutch sur-faceof the clutch:` clutch surface 81,'` into engagement with the disk and for holdingit there; Thisis termed facingfQon clutchdisk 10 by means of ay lever n a shipping mechanismv and'V as is understood `lfiwhich-is pivotedona fixed supportl 17, as geV in connection ,with looms, vits V purpose. is tov isindicated at'18, and is provided with a yoke effect release of ntheclutch uponthe occur- 19 which engages trunnions20 on opposite v rence of certain kabnormal operatingfcondisides l.of a 'collar 21`wh`ich collar is mounted tions in the loom. i ina groove 22in hub1 5', the Aarrangement beit is important when the shipping mechanismk The other endof lever 16 is providedwith operates that the clutchshould release inaneye23 which engages a pin24 projectstantly `so as to stop quickly theloomasfothingfrom a sleeve on a rod 26, pin 24 serverwise serious trouble may result,.-and the ob-, ing alsoto fix sleevey 25 to rod 26.y Located ject of our invention as applied to* a. loomis ybetween sleeve'25 and a iixedbearing27 isa 50 to provide an improved construction and ar- 4spring 28jwhich acts ina direction to force Y Arangement whereby when ythe shipping mechrod 26 towardthe right as shown in Fig. 1. anism of a Vmotor-driven loom operates, the 29 is a second bearing forrod 26 which serves kclutch will be -released instantly.. f l' also as a stop to liniitgmovement of shaft 26* Forav consideration. of what we believe to toward theright.y i K be novel and our invention, attention is dif The construction so far described is a rected to the accompanying description and known` por-tionof a ymotorjloom drive,l and the claims appended thereto. .f is to be taken as ty ical of any construction Inthe drawings, Fig. -1 is aview partlyin 0f this character. uringno'rmal operation 40 section of a structure embodying our inven- 11011.26 ismoved towapdthelgft Si) as t0 bring ne tion, vand Fig. 2 is a detailV view. clutchsurface y8*"on gear wheel 4 into engage- Referring tothe drawings, 1 indicates an.; mentfwith the Yclutch facing'on clutch disk electric motor having a shaft 2 uponone end' 10 and rod 26 is held in this p'ositionbycerof which is located a pinion 3. Pinion 3' 'tain'v portions of the loom mechanism, the armeshes with ya gear wheel 4 having a hub 5 rangement y as va whole,` forming what 'is sa loosely mounted on a shaft V6. 7 indicates fknownlas' a shipping mechanism, for a one of the bearings for shaft 6. Gear wheel loom. iIn'thefpresent-instance,a.portionof a f 4 Vis provided with a' flat surface 8 whichf shipping mechanism is indicated, rod 26 be# forms a clutch surface and is adapted to en-vk ingV shown asprovide'dvwith a hook SOIadaptgage with a clutch facing 9 on the surface ofI to be engagedy a springA Alatch vv31 car- P9 ried by a part of the loom structure. Normally latch 31 is in engagement with hook and holds the clutch in in position. On the occurrence of certainr abnormal operating conditions. rod 2G is released, thereby permitting spring 28 to force lever 1G toward the right as shown in Fig. 1 so as to move gear Wheel 4 away lrom clutch disk 10, thereby disconnecting the motor drive. In this connection, it will be understood that the motor armature floats in its field and is capable of suiicient axial movement to permit of engagement and disengagement of clutch surface 8 with the clutch facing of disk 10.

As pointed out above, itis very important that when the shipping mechanism operates, the motor drive be'disconnected instantly from the loom Aso that the loom will be Stopped at once. According to our invention, We "accomplish this result by providing pinion 3 and geary wheel 1l' with single helical teeth of a comparatively small angle, for example, an angle of the order of 1() or 15 degrees, the teeth extending in a direction such that the side'thrust due tothe single helical teeth is in a direction tending to move gear Wheel 4 towardthe right, as viewed in F i 1. In Fig. 1 the direction of rotation is in' icated by the arrow.

Vith this arrangement, it will be seen that Whenever the shipping mechanism is released spring 28 Will beassisted in moving gear wheel 4 to open the clutch by the axial rthrust du'e to the helical tooth drive. yAs a result gear Wheel 4 will be moved very quickly to disconnect the motor from the driven shaft.

lVl'lat we claim new and desire to secure by Letters Patcntl'of the United States 1. construction comprising a gear wheel which forms vthe movable clement of a clutch., va 'pinion meshing with the gear wheel, a .motor for driving them, and means normally holding the gear wheel in clutch-engaging position, characterized by the `fact that the 0'ear Wheel and pinion are provided with helical teeth 'and that the normal direction of rotation is such that theaxial thrust due tothe helical teeth lis in a direction to tend to move the gear wheel in a direction to release the clutch.

2. In a loom structure, a gear wheel which forms a movable element of a clutch, a pinion meshing therewith, means-for driving the pinion, and means normally holding said for driving the pinion, and means normally holding said gear Wheel in clutch-engaging position, said gear Wheel and pinion being provided with single helical teeth of an angle such that in the normal direction of rotation the axial thrust due to the teeth tends to move the gear Wheel in a direction to open vthe clutch.

4. In combination, a gear wheel which forms the movable element of a clutch, a t' the spring in lreleasing the clutch.

5. Thek combination with two clutchv members one of which is axially movable relatively to the other, of means for positively holding such clutch members in engagement with keach other, and a gearing connect-ed to the axially movable clutch member `for rotating it, said gearing having helical "teeth yof an angle such; that in the lnormalfdirection of rotation of the clutch members the axial thrust dueto the :teeth isy in a direction tending to separate the clutch members.

6.` The ,combination with two clutch mem-k bers one of which is axially movable relatively tothe other, of a spring which biases such movable clutch member toward open position, kmeans for positively holding ysaid clutch members in engagement with each other in opposition to said biasing means,

and a gearingconnected to the axially movin ble clutch -rnemberfor rotating it, said gearing having helical teeth of a'n angle suf-h that in the normal direction of rotation of the clutch members the axial thrust due to the vteeth is in a direction tending to sepif.;

arate the clutch members.

Inwitness whereof, we havel hereunto set our hands this sixth Aday ofy July, 1927.

IRA4 E. ROGERS WILLIAM C. SCOTT.

gear wheel in clutch-engaging position, said y gear wheel vand* pinion being provided With` teeth of an vangle such that in the normal direction of rotation thea'xial thrust ,due to the kteeth tends to move the gear Wheel in a direction to release 'the clutch.

3. A lo'o'm drive comprising 'a gear Wheel which forms a movable element of a c11uteh,a

pni'n meshing' therewith, 'an electric motor 

